diff --git a/platformio.ini b/platformio.ini
index c85251f..6bd8260 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -14,12 +14,12 @@
 ; https://docs.platformio.org/en/latest/boards/espressif32/esp32-c3-devkitc-02.html
 
 
-;[env:esp32-c3-devkitm-1]
-;platform = espressif32
-;board = esp32-c3-devkitm-1
-[env:esp32-c3-devkitc-02]
+[env:esp32-c3-devkitm-1]
 platform = espressif32
-board = esp32-c3-devkitc-02
+board = esp32-c3-devkitm-1
+;[env:esp32-c3-devkitc-02]
+;platform = espressif32
+;board = esp32-c3-devkitc-02
 
 framework = arduino
 monitor_speed = 57600
diff --git a/src/main.cpp b/src/main.cpp
index 029440b..78927eb 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -266,7 +266,8 @@ void setup() {
   delay(100);
 
   Serial.begin(57600);
-  Serial1.begin(57600, SERIAL_8N1, 17, 18);
+//  Serial1.begin(57600, SERIAL_8N1, 17, 18);
+  Serial1.begin(57600, SERIAL_8N1, 2,3);
 
   nvs_flash_init();
   tcpip_adapter_init();